virgl/drm: add resource create blob function
A blob resource is a container for:
- VIRTGPU_BLOB_MEM_GUEST: a guest memory allocation
(referred to as a "guest-only blob resource")
- VIRTGPU_BLOB_MEM_HOST3D: a host3d memory allocation
(referred to as a "host-only blob resource")
- VIRTGPU_BLOB_MEM_HOST3D_GUEST: a guest + host3d memory allocation
(referred to as a "default blob resource").
Blob resources can be used to implement new features and fix shortcomings
with the current resource create path. The subsequent patches how
blob resources may be leveraged to implement GL_ARB_buffer_storage
and get GL4.5.
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4821>
2 files changed
